CriticalFix available
docker.io, docker.io-app — security advisory
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, when using a custom BuildKit frontend, the frontend can craft an API message that causes files to be written outside of the BuildKit state directory for the execution context. The issue has been fixed in v0.28.1. The vulnerability requires using an untrusted BuildKit frontend set with `#syntax` or `--build-arg BUILDKIT_SYNTAX`. Using these options with a well-known frontend image like `docker/dockerfile` is not affected.
- Products
- docker.io, docker.io-app
- Affected versions
- 1.10.2-0ubuntu3, 1.10.2-0ubuntu4, 1.10.3-0ubuntu1, 1.10.3-0ubuntu4, 1.10.3-0ubuntu5, 1.10.3-0ubuntu6, 1.11.2-0ubuntu5~16.04, 1.12.1-0ubuntu13~16.04.1, 1.12.3-0ubuntu4~16.04.2, 1.12.6-0ubuntu1~16.04.1, 1.13.1-0ubuntu1~16.04.2, 1.13.1-0ubuntu6, 1.6.2~dfsg1-1ubuntu4, 17.03.2-0ubuntu1, 17.03.2-0ubuntu2~16.04.1, 17.03.2-0ubuntu3, 17.03.2-0ubuntu5, 17.12.1-0ubuntu1, 18.06.1-0ubuntu1.2~16.04.1, 18.06.1-0ubuntu1.2~18.04.1, 18.06.1-0ubuntu1~16.04.2, 18.06.1-0ubuntu1~18.04.1, 18.09.2-0ubuntu1~16.04.1, 18.09.2-0ubuntu1~18.04.1, 18.09.5-0ubuntu1~16.04.2, 18.09.5-0ubuntu1~18.04.2, 18.09.7-0ubuntu1~16.04.1, 18.09.7-0ubuntu1~16.04.4, 18.09.7-0ubuntu1~16.04.5, 18.09.7-0ubuntu1~16.04.6, 18.09.7-0ubuntu1~16.04.7, 18.09.7-0ubuntu1~16.04.9+esm1, 18.09.7-0ubuntu1~16.04.9+esm2, 18.09.7-0ubuntu1~18.04.1, 18.09.7-0ubuntu1~18.04.3, 18.09.7-0ubuntu1~18.04.4, 19.03.2-0ubuntu1, 19.03.6-0ubuntu1, 19.03.6-0ubuntu1~18.04.1, 19.03.6-0ubuntu1~18.04.2, 19.03.6-0ubuntu1~18.04.3, 19.03.8-0ubuntu1, 19.03.8-0ubuntu1.20.04, 19.03.8-0ubuntu1.20.04.1, 19.03.8-0ubuntu1.20.04.2, 20.10.12-0ubuntu1, 20.10.12-0ubuntu2, 20.10.12-0ubuntu2~18.04.1, 20.10.12-0ubuntu2~20.04.1, 20.10.12-0ubuntu3, 20.10.12-0ubuntu3+gke1.24.1, 20.10.12-0ubuntu4, 20.10.2-0ubuntu1~18.04.2, 20.10.2-0ubuntu1~18.04.3, 20.10.2-0ubuntu1~20.04.2, 20.10.2-0ubuntu1~20.04.3, 20.10.21-0ubuntu1~18.04.2, 20.10.21-0ubuntu1~18.04.3, 20.10.21-0ubuntu1~18.04.3+esm1, 20.10.21-0ubuntu1~18.04.3+esm2, 20.10.21-0ubuntu1~18.04.3+esm3, 20.10.21-0ubuntu1~20.04.1, 20.10.21-0ubuntu1~20.04.2, 20.10.21-0ubuntu1~20.04.4, 20.10.21-0ubuntu1~20.04.5, 20.10.21-0ubuntu1~20.04.6, 20.10.21-0ubuntu1~20.04.6+esm1, 20.10.21-0ubuntu1~20.04.6+esm2, 20.10.21-0ubuntu1~22.04.2, 20.10.21-0ubuntu1~22.04.3, 20.10.21-0ubuntu1~22.04.5, 20.10.21-0ubuntu1~22.04.6, 20.10.21-0ubuntu1~22.04.7, 20.10.21-0ubuntu1~22.04.7+esm1, 20.10.21-0ubuntu1~22.04.7+esm2, 20.10.21-0ubuntu1~22.04.8, 20.10.21-0ubuntu1~22.04.8+esm1, 20.10.24+dfsg1-1ubuntu2, 20.10.25+dfsg1-2ubuntu1, 20.10.25+dfsg1-2ubuntu1+esm1, 20.10.25+dfsg1-2ubuntu1+esm2, 20.10.25+dfsg1-2ubuntu1.24.04.1, 20.10.25+dfsg1-2ubuntu1.24.04.1+esm1, 20.10.25-0ubuntu1~20.04.1, 20.10.25-0ubuntu1~20.04.2, 20.10.25-0ubuntu1~22.04.1, 20.10.25-0ubuntu1~22.04.2, 20.10.7-0ubuntu1~18.04.1, 20.10.7-0ubuntu1~18.04.2, 20.10.7-0ubuntu1~20.04.1, 20.10.7-0ubuntu1~20.04.2, 20.10.7-0ubuntu5, 20.10.7-0ubuntu5~18.04.2, 20.10.7-0ubuntu5~18.04.3, 20.10.7-0ubuntu5~20.04.1, 20.10.7-0ubuntu5~20.04.2, 20.10.7-0ubuntu7, 24.0.5-0ubuntu1, 24.0.5-0ubuntu1~20.04.1, 24.0.5-0ubuntu1~22.04.1, 24.0.7-0ubuntu1, 24.0.7-0ubuntu2, 24.0.7-0ubuntu2~20.04.1, 24.0.7-0ubuntu2~22.04.1, 24.0.7-0ubuntu3, 24.0.7-0ubuntu4, 24.0.7-0ubuntu4.1, 26.1.3-0ubuntu1~20.04.1, 26.1.3-0ubuntu1~20.04.1+esm1, 26.1.3-0ubuntu1~22.04.1, 26.1.3-0ubuntu1~24.04.1, 26.1.5+dfsg1-9ubuntu1, 27.5.1+dfsg4-1ubuntu1, 27.5.1+dfsg4-2ubuntu1, 27.5.1-0ubuntu3, 27.5.1-0ubuntu3~22.04.1, 27.5.1-0ubuntu3~22.04.2, 27.5.1-0ubuntu3~24.04.1, 27.5.1-0ubuntu3~24.04.2, 27.5.1-0ubuntu4, 28.2.2-0ubuntu1, 28.2.2-0ubuntu1~22.04.1, 28.2.2-0ubuntu1~24.04.1, 28.5.2+dfsg4-5ubuntu1, 29.1.2-0ubuntu1, 29.1.3-0ubuntu1, 29.1.3-0ubuntu2, 29.1.3-0ubuntu3, 29.1.3-0ubuntu3~22.04.1, 29.1.3-0ubuntu3~24.04.1, 29.1.3-0ubuntu3~25.10.1, 29.1.3-0ubuntu4
- Fixed versions
- 26.1.3-0ubuntu1~20.04.1+esm2, 29.1.3-0ubuntu3~22.04.2, 29.1.3-0ubuntu3~24.04.2, 29.1.3-0ubuntu4.1, 29.1.3-0ubuntu5
- CVEs
- CVE-2026-33747
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:00 UTC · Revision 1
Source evidence
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, when using a custom BuildKit frontend, the frontend can craft an API message that causes files to be written outside of the BuildKit state directory for the execution context. The issue has been fixed in v0.28.1. The vulnerability requires using an untrusted BuildKit frontend set with `#syntax` or `--build-arg BUILDKIT_SYNTAX`. Using these options with a well-known frontend image like `docker/dockerfile` is not affected.
osv:UBUNTU-CVE-2026-33747
docker.io
Fixed versions: Not specified
docker.io
Fixed versions: Not specified
docker.io
Fixed versions: Not specified
docker.io-app
Fixed versions: 26.1.3-0ubuntu1~20.04.1+esm2
docker.io-app
Fixed versions: 29.1.3-0ubuntu3~22.04.2
docker.io
Fixed versions: Not specified
docker.io-app
Fixed versions: 29.1.3-0ubuntu3~24.04.2
docker.io
Fixed versions: Not specified
docker.io
Fixed versions: Not specified
docker.io-app
Fixed versions: Not specified
docker.io
Fixed versions: Not specified
docker.io-app
Fixed versions: 29.1.3-0ubuntu5
docker.io
Fixed versions: Not specified
docker.io-app
Fixed versions: 29.1.3-0ubuntu4.1
Complete source record
{
"id": "323c66a6f8c7905040175123a26080bacc09f9a815c7c1f2f205083184937048",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-33747",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-33747",
"summary": "BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, when using a custom BuildKit frontend, the frontend can craft an API message that causes files to be written outside of the BuildKit state directory for the execution context. The issue has been fixed in v0.28.1. The vulnerability requires using an untrusted BuildKit frontend set with `#syntax` or `--build-arg BUILDKIT_SYNTAX`. Using these options with a well-known frontend image like `docker/dockerfile` is not affected.",
"evidence": "osv:UBUNTU-CVE-2026-33747",
"products": [
{
"name": {
"value": "docker.io",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.6.2~dfsg1-1ubuntu4",
"evidence": "/affected/0/versions"
},
{
"value": "1.10.2-0ubuntu3",
"evidence": "/affected/0/versions"
},
{
"value": "1.10.2-0ubuntu4",
"evidence": "/affected/0/versions"
},
{
"value": "1.10.3-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1.10.3-0ubuntu4",
"evidence": "/affected/0/versions"
},
{
"value": "1.10.3-0ubuntu5",
"evidence": "/affected/0/versions"
},
{
"value": "1.10.3-0ubuntu6",
"evidence": "/affected/0/versions"
},
{
"value": "1.11.2-0ubuntu5~16.04",
"evidence": "/affected/0/versions"
},
{
"value": "1.12.1-0ubuntu13~16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "1.12.3-0ubuntu4~16.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "1.12.6-0ubuntu1~16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "1.13.1-0ubuntu1~16.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "17.03.2-0ubuntu2~16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "18.06.1-0ubuntu1~16.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "18.06.1-0ubuntu1.2~16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.2-0ubuntu1~16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.5-0ubuntu1~16.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.4",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.5",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.6",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.7",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.9+esm1",
"evidence": "/affected/0/versions"
},
{
"value": "18.09.7-0ubuntu1~16.04.9+esm2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "docker.io",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.13.1-0ubuntu6",
"evidence": "/affected/1/versions"
},
{
"value": "17.03.2-0ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "17.03.2-0ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "17.03.2-0ubuntu5",
"evidence": "/affected/1/versions"
},
{
"value": "17.12.1-0ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "18.06.1-0ubuntu1~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "18.06.1-0ubuntu1.2~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "18.09.2-0ubuntu1~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "18.09.5-0ubuntu1~18.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "18.09.7-0ubuntu1~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "18.09.7-0ubuntu1~18.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "18.09.7-0ubuntu1~18.04.4",
"evidence": "/affected/1/versions"
},
{
"value": "19.03.6-0ubuntu1~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "19.03.6-0ubuntu1~18.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "19.03.6-0ubuntu1~18.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.2-0ubuntu1~18.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.2-0ubuntu1~18.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.7-0ubuntu1~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.7-0ubuntu1~18.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.7-0ubuntu5~18.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.7-0ubuntu5~18.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.12-0ubuntu2~18.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.21-0ubuntu1~18.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.21-0ubuntu1~18.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.21-0ubuntu1~18.04.3+esm1",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.21-0ubuntu1~18.04.3+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "20.10.21-0ubuntu1~18.04.3+esm3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "docker.io",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "19.03.2-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "19.03.6-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "19.03.8-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "19.03.8-0ubuntu1.20.04",
"evidence": "/affected/2/versions"
},
{
"value": "19.03.8-0ubuntu1.20.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "19.03.8-0ubuntu1.20.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.2-0ubuntu1~20.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.2-0ubuntu1~20.04.3",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.7-0ubuntu1~20.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.7-0ubuntu1~20.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.7-0ubuntu5~20.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.7-0ubuntu5~20.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.12-0ubuntu2~20.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.4",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.5",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.6",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.6+esm1",
"evidence": "/affected/2/versions"
},
{
"value": "20.10.21-0ubuntu1~20.04.6+esm2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "docker.io-app",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "26.1.3-0ubuntu1~20.04.1+esm2",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "20.10.25-0ubuntu1~20.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "20.10.25-0ubuntu1~20.04.2",
"evidence": "/affected/3/versions"
},
{
"value": "24.0.5-0ubuntu1~20.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "24.0.7-0ubuntu2~20.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "26.1.3-0ubuntu1~20.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "26.1.3-0ubuntu1~20.04.1+esm1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "docker.io-app",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "29.1.3-0ubuntu3~22.04.2",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "20.10.25-0ubuntu1~22.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "20.10.25-0ubuntu1~22.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "24.0.5-0ubuntu1~22.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "24.0.7-0ubuntu2~22.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "26.1.3-0ubuntu1~22.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "27.5.1-0ubuntu3~22.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "27.5.1-0ubuntu3~22.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "28.2.2-0ubuntu1~22.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "29.1.3-0ubuntu3~22.04.1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "docker.io",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20.10.7-0ubuntu5",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.7-0ubuntu7",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.12-0ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.12-0ubuntu2",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.12-0ubuntu3",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.12-0ubuntu3+gke1.24.1",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.12-0ubuntu4",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.2",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.3",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.5",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.6",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.7",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.7+esm1",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.7+esm2",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.8",
"evidence": "/affected/5/versions"
},
{
"value": "20.10.21-0ubuntu1~22.04.8+esm1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "docker.io-app",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "29.1.3-0ubuntu3~24.04.2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": [
{
"value": "24.0.5-0ubuntu1",
"evidence": "/affected/6/versions"
},
{
"value": "24.0.7-0ubuntu1",
"evidence": "/affected/6/versions"
},
{
"value": "24.0.7-0ubuntu2",
"evidence": "/affected/6/versions"
},
{
"value": "24.0.7-0ubuntu3",
"evidence": "/affected/6/versions"
},
{
"value": "24.0.7-0ubuntu4",
"evidence": "/affected/6/versions"
},
{
"value": "24.0.7-0ubuntu4.1",
"evidence": "/affected/6/versions"
},
{
"value": "26.1.3-0ubuntu1~24.04.1",
"evidence": "/affected/6/versions"
},
{
"value": "27.5.1-0ubuntu3~24.04.1",
"evidence": "/affected/6/versions"
},
{
"value": "27.5.1-0ubuntu3~24.04.2",
"evidence": "/affected/6/versions"
},
{
"value": "28.2.2-0ubuntu1~24.04.1",
"evidence": "/affected/6/versions"
},
{
"value": "29.1.3-0ubuntu3~24.04.1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "docker.io",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "20.10.24+dfsg1-1ubuntu2",
"evidence": "/affected/7/versions"
},
{
"value": "20.10.25+dfsg1-2ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "20.10.25+dfsg1-2ubuntu1+esm1",
"evidence": "/affected/7/versions"
},
{
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker.io",
"binary_version": "29.1.3-0ubuntu4.1"
}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-17T13:00:00.788885608Z",
"provider": "osv",
"upstream": [
"CVE-2026-33747"
],
"references": [
"https://ubuntu.com/security/CVE-2026-33747",
"https://www.cve.org/CVERecord?id=CVE-2026-33747",
"https://github.com/moby/buildkit/releases/tag/v0.28.1",
"https://github.com/moby/buildkit/security/advisories/GHSA-4c29-8rgm-jvjj",
"https://ubuntu.com/security/notices/USN-8230-1"
]
},
"related_cves": [
{
"value": "CVE-2026-33747",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 360116,
"published_at": "2026-04-22T00:00:00+00:00"
}